Regenerative Burner Type Ladle Preheater Greatly contributes to the reduction of energy cost and CO2 emissions. Newest ladle preheater with regenerative burner sharply reduces the energy costs. Approx.50% of used energy is cut down! (Compared with the conventional air burner) Horizontal Cart Type Making it possible to preheat a number of ladles in a single installation. Furthermore, the high-temperature heating of the ladles is possible with the ladles attached closely together. Chugai Ro s plant supports the production stage through the test run stage, thus contributing to on-site man-hour reduction and initial cost suppression. Layout example The preheating of a number of ladles in a single installation is enabled by sliding movement. Furthermore, opening and closing movement back and forth enables the hightemperature heating of the ladles with lids attached closely together.
Vertical Swing Type The preheating of two ladles is enabled by swinging the equipment. Reference Drawing (for 70 t Ladle) Vertical Gate Type Preheating is possible directly from the top of the steel reception cart. Vertical Tilting Type This type enables the lid of ladle to open/close in vertical 90 degree.
Oxygen Burner Type Rapid and High Temperature Ladle Preheater High temperature flame of pure oxygen burner preheats ladle in short time. Greatly extends the life of ladle refractory material. Preheating to 1350 in 20 minutes just before the steel reception! (Example by 70 tons ladle) EFFECTS 1. Great life extension of refractory material. 2. A rate reduction in electric power consumption enabled by steel tapping from electric furnaces at low temperatures. 3. Suppresses the consumption of ladle fuel. Temperature Comparison in Heating Capability between Oxygen Burner and Conventional Air Burner Inner ladle surface Difference in heating capability Ladle center Ladle center Ladle center Inner ladle surface Ladle center Outer ladle side Outer ladle side Outer ladle side Outer ladle side Heating time Oxygen burner Air burner
The space-saving tilting type is ideal as pre-stage equipment for electric furnaces. Hybrid Oxygen/air Burner for Ladle Preheater Applies various needs from new ladle first drying to high temperature preheating. Combustion oxygen Cooling air Combustion air Fuel SPECIFICATION EXAMPLE Model Firing rate Fuel Oxygen flow rate Cooling air flow rate Fuel air flow rate Oxygen Burner for Ladle Preheater Applies various needs from new ladle first drying to high temperature preheating. Fuel oxygen Cooling water SPECIFICATION EXAMPLE Model Firing rate Fuel Oxygen flow rate Cooling air flow rate
Tundish Preheater Newest type that main burner direct ignition type high speed burner is mounted. The straight flame flow superior in power to conventional burner flames makes it possible to preheat to the bottoms of tundishes at high temperatures. EFFECTS 1.Extended life of furnace members and prevention of a drop in the temperature of molten metal. 2.Adaptability to production of a variety of products in small quantities by hot cleaning. 3.Improvement in productivity by rapid heating. The straight flame makes it possible to preheat to the nozzle of the tundish bottom at high temperatures!
Edge Heater and Corner Reheating System For hot direct rolling, an optimum combustion equipment for heating edge of billet before rolling. This equipment using a pure oxygen burner with a perforated nozzle can keep flame of high velocity and high temperature and heat local portions concentratedly with its impingement effect. Efficient heating can be achieved by using a swiveling or lifting drive unit. Material:Billet (150mm)
Auxiliary Combustion Equipment for Electric Furnace Improves a steel-making capacity by fully automatic control with high performance oxygen burner. EFFECTS 1.Reduction in melting time. 2.Improvement in production efficiency. 3.Improvement in yield. 4.Reduction in production cost. 5.Improvement in working environment. Supports the oxygen lance function mounted burner that blows in plenty of oxygen into the furnace. HIGH PERFORMANCE OXYGEN BURNERS A pure oxygen combustion system rapidly heats cold material to high temperatures. Built-in Laval nozzles blow oxygen to scrap at a high speed to cut and drop it into molten steel. The burner promotes melting a wide area of scrap owing to its broad injection angle. The burner can be fitted at any position since its tilting angle is optionally decided. It can be fitted to the furnace door. Pure oxygen burners with no oxygen injection nozzle are also available.
Melting test of stainless billet BURNER MOUNTING The burner is mounted in optimum way according to the layout. If the burner is mounted on cold spot or skimming port, the auxiliary combustion gains maximum efficiency. Burner Mounting Steel outlet side Burner on side Burner on side Electrode Cold spot Burner on side Burner on skimming port STANDARD SPECIFICATIONS AND DIMENSIONS Only for auxiliary combustion For auxiliary combustion and oxygen lance Oxygen Cooling water Combustion Cooling water Fuel oxygen Fuel Oxygen for lance Burner tube length Burner tube length Model Firing rate Oxygen for combustion Oxygen for lance Standard size Connection diameter Oxygen for Oxygen for Fuel combustion lance Cooling water Supply pressure Fuel Oxygen Cooling water rate Cooling water
Straight Bar Quick Heating Equipment Prevents the edges from cracking (strain aging cracking) after the steel bars are cut. Compared with the conventional manual heating with portable burners or induction heaters, this equipment make it possible to improve the work environment and a great reduction in the running cost. Oxy-fuel flame Straight bar Oxygen burner Jet flame by collision
Enables operation that does not require the labor by fully automatic control Applies various bundle diameter or length! HEATING ABILITY Temperature Distribution after Heating Finish of heating Temperature SPECIFICATIONS Appearance s Time Type : Several holes type block burner Fluids : Various fuel gases Oxygen (93 or over) Cooling water (for cooling burners) Nitrogen or high pressure air (for purge of burners) Heating ability : At depth of 5mm from edge 15mm40011 sec. 50mm25012.5 sec. 90mmt 20016 sec. MATERIAL SPECIFICATIONS (EXAMPLE) Material : SUJSCMS30C or over Dimension : Bar diameter 14100mm Bundle diameter 100400mm Length 4.07.0m Consult your Chugai Ro representative for dimensions and shapes other than the above.
RH Preheater for Degassing Tank Adopts an oxygen burner that enables uniformed rapid high-temperature heating, while supporting automatic operation control as well. Furthermore, the operation of the tank with no ground metal ensures quality improvement with tank maintenance effort saved. Top burner (model RHB) Ground metal collecting box Exhaust Nozzle Construction of RHB Burner Multi-nozzles (consisting of 12 divided nozzles) Cooling water Pure oxygen flame Dilution gas Burner nozzle Pilot burner High temperature gas Fuel Stabilizer (baffle plate) SAFETY PRECAUTIONS : Read the instruction manual carefully before using the equipment. URL http://www.chugai.co.jp The descriptions and specifications are subject to change without notice. Sakai Works : 2-4,Chikko-Shinmachi,Nishi-ku,Sakai 592-8331,Japan Tel Fax Tokyo Branch : 2-12-7,Higashi-Shinbashi,Minato-ku,Tokyo 105-0021,Japan Tel 33578-4747 Fax 33578-4754 Nagoya Sales Office: 1-21-19,Meieki-Minami,Nakamura-ku,Nagoya 450-0003,Japan Tel 52561-3561 Fax 52561-3566 Combustion Laboratory: 1000-6,Enmyo-cho,Kashiwara,Osaka 582-0027,Japan Tel 72977-8503 Fax 72978-6981 130610Printed in Japan